Control System 55
Service Manual – SC6500
™
I/O Table with Shop Measurements
A2 Control Board Assembly
Designation Pin ID
Wire ID/
Color
Description
Signal
Characteristics
Nominal
Value (when
activated)
Reference
To:
Acceptable
Range
Measured Comments
Output J1-1 BLU/GRA
Detergent
Pump2 (+)
Pulsed Voltage 0 or 36V B- (ground)
see comment
below *
18-23V
Complex pulsed PWM signal
Measured in service test
mode.
Bidirectional J1-2 BRN/BLU CAN-L
Digital
Communication
see comment see comment 2.37V
Protocol analyzer needed to
verify connection
Bidirectional J1-3 GRN/BLU CAN-H
Digital
Communication
see comment see comment 2.64V
Protocol analyzer needed to
verify connection
Input J1-4 ORN/RED
Speed Control
- Fault
Voltage see comment B- (ground) see comment
Pulsed signal equal to the
fault code ashed by the
speed controllers built-in
status LED
Input J1-5 GRN Battery + Voltage +36V B- (ground) 31V - 38V 36.7V
Downstream of circuit
breaker F1, Key switch S1,
Diode D1, Seat Switch S2
and Battery Interlock Switch
S3
Output J1-6 TAN/BRN
Detergent
Pump1 (-)
Pulsed Voltage 0 or 36V B- (ground)
see comment
below *
11-17V
Line should alternate
between 0V and 36V when
detergent pump is activated.
Measured in service test
mode.
Output J1-7 BLK/GRA
Detergent
Pump1 (+)
Pulsed Voltage 0 or 36V B- (ground)
see comment
below *
18-23V
Line should alternate
between 0V and 36V when
detergent pump is activated
Input J1-8 ORN Battery + Voltage +36V B- (ground) 31V - 38V 37.46V
Downstream of circuit
breaker F1, switched through
key switch S1
Output J1-9 ORN/GRA
Detergent
Pump2 (-)
Pulsed Voltage 0 or 36V B- (ground)
see comment
below *
11-17V
Line should alternate
between 0V and 36V when
detergent pump is activated.
Measured in service test
mode
Input J1-10 BLK Battery - Voltage 0V B- (ground) 0 - 1V 0.04V Vacuum motor running
Input J1-11 RED/WHT
Speed Control -
Motion
Voltage
0V (moving),
36V (not
moving)
B- (ground)
0 - 1V
(moving),
31 - 38V (not
moving)
24.8V N
0.006V FWD or REV
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